Across
- 4. a cloud of gas and dust
- 6. the only star in our solar system
- 10. the process that fuels a star
- 11. a star that is enlarged and at the end of life
- 12. an almost fully dead star
- 14. a hole in spacetime after a supernova
Down
- 1. a huge sphere of very hot gas
- 2. a star before nuclear fusion
- 3. everything that has, will, or does exist
- 5. a fully dead star
- 6. a massive explosion when a star dies
- 7. a powerful star that forms after supernova
- 8. the element that fuses to make helium
- 9. the distance light travels in a year
- 13. the abbreviation for leftover heat from big bang